Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat the water to near boiling point and force it through finely ground coffee packed tightly inside a portafilter. This results in a concentrated espresso. Many models allow you to control key espresso factors, such as https://wwwcoffeeeuk77709.tkzblog.com/29709919/7-easy-secrets-to-totally-intoxicating-your-bean-to-cup-espresso-machine